Improved flour-bolt



.ltitrh tntes ntent ffice.

GRACE n. HoRToN, 0F SAND'BANK, NEW YORK.

Letters Patent No. 81,086, dated August 18, 1868.

'IMPRovED FLoR-BOLT;

@te Sttthule :mm3 tu iu iigcsc ttttrs aimt mit mating part of its stmt.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, CHAE B. HonroN, of Sand Bank, 'in the county ofOswego, and State of New York, have invented a new and usefulImprovement iu Flour-Bolts; and I do hereby declare the following t0 befull, clear, and exact description thereof, reference being had to theaccompanying drawings, which are made a part of this specification.

My invention has for its objects the cooling and Ventilating-,of theinterior of ilour-holts, and keeping the l meshes of the cloth clear offlour, meal, or other matter. I'

In cooling and ventilating the interior of the holt-chest, by forcing u.current of uir into it, great diiculty has been experienced in providingfor the egress of the worm air insuch a way that it would not carry our,bran, or other matters with it'. This diiiculty I have eil'ectuallyremoved by providing in the top of theboltchest, or in other convenientpart of the apparatus, an ample area of ventilation-spaces, protected byany suit' able cloth or wire gauze, which, while permitting the passageAof air,will prevent the escape cf hour.`

Mynvention furtherv ccnst'strin Ann improved; rappergmouuted uponVths'tranlve-B staysof theboltirrg cylinder, end acting on its exteriorsurface, as hereinafter explained.

In the drawingsy y Figure 1 represents a vertical longitudinal sectioncf a flour-bolt, illustrating myinventiompthc bolt-cylinder and othercentral parts being shown in elevation.

Figure 2 is atransverse section, in the plane indicated by the linen: xin iig. 1.

Figure 3 is a transverse section in the plane indicated by the line y y,tig. 1.

The holt-chest A, bolt-cylinder B, conveyer C, pitch-hoard P, and spoutsS S may be of usual form. A. blower of any suitable construction(represented iulthe present illustration by a rotary fan, 1),) isemployed to produce a strong `blast of nir, which is conducted by spoutsI or tubes E to the interior of the bolt-chest, and delivered throughslot, e, so as to strike the surface of the bolt-cloth obliquely.

This current of air etl'ectuully prevents any accumulation of our orforeign matters upon or within the meshes of the cloth, and serveslikewise to constantly cool the flour in process cf'bolting.

The large volume of air thus introduced necessarily produces pressurewithin the bolt-chest,vu.nd it has been found that, without some specialprovision to prevent it, this pressure will cause the escape of a largeamount of flour, -which is in ne particles, held in suspension hy theair within the chest.

To prevent this loss, I provide in the top, ,or 'in the upper part of`the sides, or in other convenient part or parts of the casing of thechest, Ventilating-spares F F, of large arca, w'hich muy he covered withbolting-cloth, wire gauze, course cotton cloth, or other Amaterial whichtney serve to arrest the ilour while permitting the escape of air. f .Y

The inclination of the pitch-board P, and its conveyance toward the endofthe chest; cause aslight obstruction to the discharge of bran, andthuswill prevent theescnpe of air ut this point, but, as an additionalprotection, the long sack, which receives the-bran from the spout S',lmay be tied at a considerable distance below the spout,V and, when.it\becomes filled with bran, openedand rctied. Y

My improved rapper to dislodge our from the meshes of the cloth, andfrom clinging around the ribs of 4 the boltcylnder, consists of nham-mer, H, secured to a pivot or shaft, I, from which projects s. rigidarm, I. The spiing .I drives the hammer down when it, is released fromthe tappets K K,'with which tuppets the arm I comes in contact to raisethe hammer, as .the cylinder B revolves.

In practice, I employ three of these rappers around a common hexagonalor six-ribbed bolt, that is to say,

. once to each two ribs, being attached, as represented, to the stays L.Similar sets of three may bo used wherever desired along the length ofthe bolt, either with or without the Hirst-apparatus.' The tappets K Kmay be conveniently made, as in the present illustration, of set-screws,adapted to be turned in or out to give hammers heavier or lighterstrokes, or avoid actingon them ot all at either or both places. Commonjam-nuts are placed upon these set-screws to secure them.

ames 2 With a. six-ribbed bolt, the hammer, when raised by the firsttoppet K, will strike in an upward direction against the lowest rib ofthe bolt. This I nfl to be the moet effective blow for discharging Hourfrom the cloth.

The blow which is imparted by the second tappet K' nets horizontallyagainst the rib, and serves to dislodge any accumulation of meal whichmay have collected in the anglo between the rib and the cloth.

It will be understood that the blastlappnratus may be used without therappers, or the latter without the former, or they may be used togetherWithout interferingwith each other.

The foregoing description and the accompanying drawings, withoutrepresenting the relative proportions of parts which exist in the actualmachine, will serve to convey to the practical miller and millwright a.clear understanding ofthe two parts of my invention.

I do not claim precipitating our from the nir by means of a icollecting-chamber,",with slots projecting from its top and bottomalternately, as described in William F. Cochrane's patent, grantedJanuary 6, 1863; but

What I claim as new, and desire to secure by Letters Patent, is g 1. Thecombination of the blast-apparatus D E e, for supplying air totheinterior of the bolt-chest, with ventilators F, constructed of anysuitable cloth, and arranged substantially as herein set forth, for thepurposes stated.

' 2. I further claim the arrangement of spring rappers H I I' Jmmountcdtransversely upon the exterior of i the bolt-chest, and operating in theinn-nner and for the purposes specied. i

CHAGE B. HORTON.

Witnesses:

Ucrsvlus KNIGHT, W. B. DnMINo.

